1. Department Occupational Health, College of Bio and Medical Sciences, Daegu Catholic University, Gyeongsan, Republic of Korea
2. Department of Preventive Medicine, College of Medicine, Dong-A University, Busan, Republic of Korea
3. Graduate School Department of Toxicology, Daegu Catholic University, Gyeongsan, Republic of Korea
4. Department of Preventive Medicine, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea